HX711 Weighing Sensor Dual-Channel 24 Bit Precision A/D Module Pressure Sensor for Arduino Microcontroller

HX711 is an electronic scale module, whose working principle is to convert the measured changes in resistance value changes, through the conversion circuit into electrical output.

The module communicates with the host computer through TTL232

HX711 module uses 24 high precision A/D converter chip hx711.

It is a specially designed for the high precision electronic scale design, with two analog input channel, the internal integration of 128 times the programmable gain amplifier.

Features:

1. Two selectable differential input channels
2. On-chip active low noise PGA with selectable gain of 32, 64 and 128
3. Integrated On-chip power supply regulator for load-cell and ADC analog power supply
4. Inbuilt On-chip oscillator requiring no external component with optional external crystal
5. The On-chip power-on-reset
6. Simple digital control and serial interface: pin-driven controls, no programming needed
7. Selectable 10SPS or 80SPS output data rate
8. Simultaneous 50 and 60Hz supply rejection
9. Current consumption including on-chip analog power supply regulator: normal operation < 1.5mA, power down < 1uA
10. Operation supply voltage range: 2.6 ~ 5.5V
11. Operating Temperature Range:-20 degree ~ +85 degree

Application

Widely used in aerospace, mechanical, electrical, chemical, construction, medicine and many other fields, used to measure force, pressure, displacement, strain, torque, acceleration.

Working principle: